Home / 862,804.80-1,294,207.20-489,556.80

Finding the Fourth Proportional to 862,804.80, 1,294,207.20 and 489,556.80

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Solution

The fourth proportional to 862,804.80, 1,294,207.20 and 489,556.80 is: 734,335.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,804.80 : 1,294,207.20 = 489,556.80 : x
  2. Step 2: Convert to fraction form
    862,804.80/1,294,207.20 = 489,556.80/x
  3. Step 3: Cross multiply
    862,804.80x = 1,294,207.20 × 489,556.80
  4. Step 4: Simplify right side
    862,804.80x = 633,587,935,368.96
  5. Step 5: Solve for x
    x = 633,587,935,368.96/862,804.80
  6. Step 6: Final answer
    x = 734,335.20

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.